• Title/Summary/Keyword: daily consumption

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Effects of rearing density on food consumption, adult mortality and mean number of hatchlings of Gryllus bimaculatus (Orthoptera: Gryllidae) (쌍별귀뚜라미, Gryllus bimaculatus (Orthoptera: Gryllidae)의 사육밀도가 섭식량, 성충사망률 및 부화 약충수에 미치는 영향)

  • Park, Young-Kyu;Lee, Hyung-Gun;Choi, Young-Cheol
    • Journal of Sericultural and Entomological Science
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    • v.51 no.2
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    • pp.89-94
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    • 2013
  • The aim of the present study is to investigate food consumption, hatching periods, adult mortality, the mean number of hatchlings and ovipositional trend of Gryllus bimaculatus De Geer. The rearing and experiments were conducted in the rearing room ($28{\pm}2^{\circ}C$, $60{\pm}10%$RH). As the adult rearing density increased from 50 to 400, it did not affect the average daily food consumption of adult crickets which was $0.067{\pm}0.008$ g a day. However, the daily radish consumption decreased from 0.128 to 0.068 g per day. 95.8% of eggs hatched by the sixth day after the beginning of hatching. The average mortality of the adults gradually increased, and reached 93.9% by the 8th week. Total number of hatchlings per female was $172.2{\pm}10.6$ ($mean{\pm}SD$) in 200 females rearing cages, which was noticeably less than $248.8{\pm}17.8$ ($mean{\pm}SD$) in 100 females rearing cages. Sex ratio of the crickets given in the rearing cages did not affect both the number of hatchlings and ovipositon rate. Oviposition rate periodically fluctuated as progressed, and it reached 81.5% of the total oviposition by the $3^{rd}$ week since the beginning of ovipoisiton.

Nutrient Consumption of Children from Lunch at Child Day Care Centers and Kindergartens (어린이집과 유치원 아동의 점심 급식을 통한 영양 섭취 평가)

  • Bae, Jeong-Sook;Lee, Kyung-Eun
    • Journal of the Korean Society of Food Culture
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    • v.34 no.6
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    • pp.707-718
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    • 2019
  • This study assessed the nutrient consumption of children from lunch at day care centers and kindergartens. A total of 184 lunch plates were selected in two child day care centers and two kindergartens in Seoul. Weights of the menus in planned meals were measured and amount of served and consumed lunches were calculated using a digital photography technique. Nutrients of the planned, served, and consumed lunches were assessed using CAN-Pro 4.0 and the Index of Nutritional Quality (INQ) was calculated for each meal. Compared with the estimated energy requirement for lunch for 3-5 year old children, the planned meals of the child day care centers and kindergartens contributed 42.8% and 98.8% of the daily energy requirements, respectively. At a child day care center, a served meal provided more nutrients than a planned meal since some children requested more servings after eating the served meals. This showed that the planned meal did not meet children's needs as well as the nutrient requirements. At the other child care center, children were served less than the planned meal by 6.8%, which resulted in serving less energy, calcium, potassium, and vitamin C than the required nutrients for lunch. Kindergarten A served meals with the energy requirement for lunch of 101.8%, but Kindergarten B served a meal with the energy requirement of 83.5%. Since the served portions were too small to meet nutrient requirements of the children, they consumed almost all the food served, and their nutrient consumption was similar to the nutrients served. Even though they consumed all the food served, their nutrient consumption did not meet their nutritional requirements. When assessed by INQ, the quality of the meal was good; children could consume enough nutrients when served proper quantity. Teachers who are responsible for serving meals need to be educated on proper portion sizes and how to encourage children to practice healthy eating. To promote healthy eating among children, parents need to provide children with messages consistent with what they have learned at institutions and to be a good role model in daily dietary life.

Survey on the Patterns of Fortified Food Consumption and Intake of Vitamins and Minerals in Fortified Foods by Elementary School and Middle-School Students in Korea (우리나라 일부 초등학생과 중학생의 영양강화식품 섭취 실태 및 영양강화식품을 통한 비타민과 무기질 섭취량 조사)

  • Kim, Sun-Hyo
    • Journal of the Korean Society of Food Culture
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    • v.26 no.3
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    • pp.295-306
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    • 2011
  • This study was performed to investigate patterns of fortified food (FF) consumption and intake of vitamins and minerals from FFs among 577 Korean children (12.4 years of age) who attended elementary or middle school. FFs eaten by children as a snack were surveyed using the food record method during 3 days, including 2 week days and one weekend. As a result, 114 FF items were eaten by the children, and several kinds of nutrients such as vitamin A, D, E, B complex, C, calcium (Ca), iron (Fe), and zinc (Zn) were fortified in these foods. Ca-FFs (65.8%) were most frequently consumed, followed by vitamin C-FFs (33.4%) and vitamin D-FFs (33.3%). The number of FF items in each food group was the most in the milk group (n=24, 21.0%), followed by the beverage group (n=19, 16.7%), and the cookie/bread/cake group (n=17, 14.9%). Fortified nutrients in FFs were in various combinations, but the major combination patterns were Ca, Ca plus vitamins, Ca plus vitamins plus other minerals, and Ca plus other minerals. Daily mean intakes of vitamins and minerals from the FFs were 66-300% more than those of the recommended nutrient intake (RNI ) or adequate intake (AI) for most vitamins and minerals. Daily maximum intakes (95th percentile) of vitamins and minerals from FFs were 1-15 times the RNI or AI for most vitamins and minerals. Vitamin and mineral consumption ratios from each FF group were different according to the kind of fortified nutrient. For example, vitamin C was mostly eaten in fortified beverages (46-54%), and Fe was mostly eaten in fortified cookie/breads/cakes (87%). The above results show that FF consumption varied widely among the children, and that most of the children's foods were fortified with several vitamins and minerals without a common rule; thus, subjects risked over consuming vitamins and minerals by eating FFs. Therefore, practical guideline on FF use for children's optimal nutrition and health should be provided through nutrition education.

A Study on Seasonal Variations of Food Consumption of Korean Farmers (한국농촌주민(韓國農村住民)의 계절별(季節別) 식품섭취조사연구(食品攝取調査硏究))

  • Park, Michael Myung-Yun
    • Journal of Nutrition and Health
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    • v.9 no.1
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    • pp.43-50
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    • 1976
  • This is the report of a food consumption survey of 193 members of 30 farm families in three rural villages of Korea. From a total of 188 households of the three villages, namely Wolgok in Kyunggi Do Province, Wachon in Kangwon Do Province, and Sobong in Cholla Namdo Province, 30 households were chosen for the survey. Four consecutive seasonal surveys, beginning in the autumn, November 1974 and finishing with the summer, August 1975, were made and each survey covered three consecutive days. The Precise Weighing Method was used in evaluating the kinds of food and nutrient intakes of the subjects. This method entails the accurate weighing of all foods by the investigator just prior to their consumption by the subjects under investigation. This survey was male to determine the actual food eaten by the members of these farm families at each season of the year, and to note any special differences in the foods consumed. The results obtained are summarized as follows: Food Intake The traditional ordinary diet of Korean farmers consists mainly of rice and other cereals as staple foods, and simple subsidary foods. The nutritional shortcomings of rice as a staple food are evident in the subclinical status of nutritional deficiencies. The mean consumption of cereals and their products was very high and it was more than half of the daily total food intake throughout all the seasons. The consumption of animal food, fruits, and fat by the farmers was very low. Fruit intake during winter and spring was almost nil. One of the special foods in the Korean dietary pattern is Kim-chi, a variety of pickled and fermented vegetables. The mean intake of Kim-chi during autumn and winter was very much higher than the other seasons. Korean farmers have difficulties in balanced year-round supply of food due to seasonality of food production and lack of food preservation. As nutrition problems of Korean farmers are highly influenced by seasonal variations, the expansion of an appropriate food preservation and storage programme should be encouraged. Special consideration should be given to new methods of preservation, the types of foods preserved, and production and consumption of nutritionally valuable foods for the improvement of the nutritional status in rural communities. Nutrient Intake Average adult rates for calorie and protein in the three study areas were 0.80 and 0.87 respectively, with little variations by villages. The adult caloric intake in averaged 2,928 kcal for autumn, 2,662 for winter, 2,673 for spring, and 2,760 for summer. Cereals contributed most of the total calories. In terms of the recommended daily dietary allowances for the Korean given by the Korea FAO Association, the diets in this survey were adequate except in the winter and spring. The protein intake averaged from 76.4 grams in autumn to 83.4 grams in summer and was near the recommended allowance, but a relatively large proportion of the total protein came from cereals and their products. The fat intake was unsatisfactory, ranging from 19.2 grams to 29.3 grams for the four seasons, and the consumption during farming season was higher than other seasons. It is apparent that the diet of the Korean farmers should be supplemented by calcium during autumn and winter. The highest calcium intake, with a mean of 583.5 milligrams, was recorded in summer. The mean intake of iron ranged from a low of 9.2 milligrams in the autumn to a high of 15.0 milligrams in the spring and it was satisfactory for all seasons. Among the vitamin group, the daily average intakes of vitamin A, thiamine, riboflavin, and ascorbic acid were lower than the desired intake throughout all the seasons. The mean vitamin A intake as ${\beta}-carotene$ ranged from a low of 2,807.8 IU to a high of 5,221.0 IU. The thiamine intake ranged from 0.98 milligrams to 1.19 milligrams, while mean riboflavin intake ranged from 0.92 milligrams to 1.13 milligrams. Ascorbic acid intake was 37.3 milligrams, the lowest, and the highest 47.8 milligrams. Niacin intake among Korean farmers was higher than the recommended allowance throughout all the seasons, and the mean intake ranged from 18.3 milligrams to 25.8 milligrams. The main character of the Korean farmers' diet has been found low in quality of protein and high in carbohydrate. Attention should be paid to the low intake of vitamin A, thiamine, riboflavin, and ascorbic acid among Korean farmers.

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Effects of Vitamin C Supplementation on Immune Status in Smoking and Nonsmoking Male College Students (흡연자에 있어 비타민 C 보충이 면역능력에 미치는 영향)

  • 김우경
    • Journal of Nutrition and Health
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    • v.31 no.8
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    • pp.1244-1253
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    • 1998
  • This study investigated the effects of vitamin C supplementation on immune status in smoking and nonsmoking male college students. Blood samples were obtained from 15 healthy smoking and from 15 healthy nonsmoking volunteers before and 4 weeks after vitamin C supplementation (1000mg/day). Daily nutrient intakes was also calculated. Plasma vitamin C, E, and A concentrations, white blood cells and subpopulations, lymphocytes and subpopulations, NK cell percentage,plasma immunoglobulin A, G, M and complement C3, plasma interleukin-2 , and prostagladin E2 were measured . Daily vitamin C consumption was lower in smokers than in nonsmokers. Vitamin C supplementation significantly increased plasma vitamin C in smokers, and increased NK cell percentage in smokers and nonsmokers. Plasma IL-2 concentrations were significantly increased by vitamin C supplementation in nonsmokers, and decreased helpe $r^pressor T cell ratio were decreased by vitamin C supplementatiion , but the differences were not significant. White blood cells and subpopulation percentage and plasma prostaglandin E2 concentration were not affected by smoking and vitamin C supplementation. These findings as nonsmokers.rs.

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Development of the wearable ECG measurement system for health monitoring during daily life (일상생활 중 건강모니터링을 위한 착용형 심전도계측 시스템 개발)

  • Noh, Yun-Hong;Jeong, Do-Un
    • Journal of Sensor Science and Technology
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    • v.19 no.1
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    • pp.43-51
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    • 2010
  • In this study, wearable ECG measurement system was implemented for health monitoring during daily life. A wearable belt-type ECG electrode worn around the chest by measuring the real-time ECG is produced in order to minimize the inconvenience in wearing. The measured ECG signal is transmitted via an ultra low power consumption wireless data communications unit to personal computer using Zigbee-compatible wireless sensor node. The ECG monitoring program is developed at end user which is personal computer. The measured ECG contains many noises mainly due to motion artifacts. For ECG signal processing, adaptive filtering process is proposed which can reduce motion artifacts efficiently and accurately than digital filter. The experimental results show that a reliable performance with high quality ECG signal can be achieved using this wearable ECG monitoring system.

THE EXPERIMENTAL STUDY ON THE INFLUENCE OF SUCROSE-OVERDOSAGE ON RAT ORAL MUCOSA (과당투여가 가토 구강점막조직에 미치는 영향에 관한 연구)

  • Rhee, Choon-Geun
    • The Journal of the Korean dental association
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    • v.19 no.2 s.141
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    • pp.163-166
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    • 1981
  • Sugar consumption has been increased in recent days according to an improvement in living conditions. It is generally accepted that sugar is one of the causes of caries and that diabetes mellitus is closely related to the periodontal diseases. This investigation was designed to gain informations on the influence of overdosage of sugar and/or high blood sugar level on the periodontal tissue. 12 rats weighing about 1.5Kg were divided into 4 groups, control one and 3-day, 7-day, 14-day ones after daily administration of 30-50 gm of sucrose. The results were as follows: 1. Daily adminisration of 30-50 gm of sucrose elevated blood glucose level as much as 10-20 mg% than before. 2. Epithelial keratinization was gradually conspicuous to the dosage of sucrose. 3. The severity of inflammatory infiltration was also increased to the dosage of sucrose. 4. Inflammatory infiltration was encountered in marginal gingiva more than other periodontal tissue.

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Building Energy Demand Models for Offices in Korea (업무용 건물의 에너지 부하 모델)

  • Park, Hwa-Choon;Chung, Mo
    • Journal of the Korean Solar Energy Society
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    • v.29 no.5
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    • pp.1-7
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    • 2009
  • Energy demands for offices in Korea are surveyed and analyzed to generate communicational models for simulations. Daily energy loads of 13 office buildings scattered in the 6 largest cities in the country are surveyed and analyzed based on energy consumption log sheets. Detailed hourly loads that are frequently required when a detailed operation simulation is performed are measured using remote data acquisition processes for 3 offices. The complete load demand models of electricity, cooling, heating and hot water are established by combining the daily and hourly patterns based on the statistical behavior of the hourly patterns.

Overall Assessment of Organochlorine Insecticide Residues in Korean Foods (한국식품(韓國食品)중 유기염소계(有機鹽素系) 잔류농약(殘溜農藥)에 관한 종합평가(綜合評價))

  • Lee, Su-Rae
    • Korean Journal of Food Science and Technology
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    • v.14 no.1
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    • pp.82-93
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    • 1982
  • The use pattern and survey data on the residue levels of organochlorine insecticides in Korea were summarized. On the basis of available data on food consumption and residue levels, the daily intake of the pesticide chemicals by average Korean adults were calculated to give $13.77\;{\mu}g$ of total BHC, $2.45\;{\mu}g$ of total DDT and $4.06\;{\mu}g$ of heptachlor and its epoxide. These intake levels were compared with the acceptable daily intake proposed by FAO/WHO and values obtained in other countries. It was then proposed to undertake a total diet study on pesticide chemicals for the sake of food safety assurrance and reasonable regulation of pesticides for food production in this country.

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Building Load Models for Hotels in Korea (국내 호텔 건물의 에너지 부하 모델)

  • Park, Hwa-Choon;Chung, Mo
    • Journal of the Korean Solar Energy Society
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    • v.29 no.4
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    • pp.48-57
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    • 2009
  • Energy demands for hotels in Korea are surveyed and statistically analyzed to develop calculation models for a simulation. Daily energy loads of 16 hotels located in Seoul, Busan, Daegu, Inchon, and Daejon are analyzed based on energy log sheets. Detailed hourly loads are field measured for 3 hotels that are carefully selected among the surveyed. One of the salient features for energy consumption by hotels is their weekly periodicity. Relatively large values of deviations are observed for both heat and electricity loads through the country. The mains factors are: location, hotel grade (luxuriousness) and insulation. Detailed quantitative information such are annual average, daily variation, and hourly patterns are provided.